Yamaha K-720 (ca. 1985)
Not much is documented about the Yamaha K-720. What the record shows comes mainly from a brief mention at the Summer Consumer Electronics Show. It was an autoreverse cassette deck introduced around 1985 with a list price of $449. High Fidelity (September 1985, p.34) included it in a roundup of new tape decks. The magazine noted that it had both of the "advanced" noise reduction options of the period, plus HX Pro headroom extension, along with numerous programmable convenience features. The mention of "both" noise reduction systems suggests it likely offered Dolby B and C, and possibly DBX - common top-of-line amenities at the time - but the source does not name them.
Past that single show listing, there isn't much left. No service manual, user guide, or specification sheet has turned up in the usual archives. Its transport details, wow-and-flutter figures, and frequency response remain unconfirmed until a manual or a period review with measured performance surfaces.
Known facts at a glance:
- Product: Autoreverse cassette deck
- Manufacturer: Yamaha Corporation
- Approximate release: 1985
- Original price: $449
- Key features (per High Fidelity): Autoreverse, HX Pro, dual advanced noise reduction systems, programmable playback
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